package demo1;

public class KeyBoard implements USB
{

    @Override
    public void openDevice() {
        System.out.println("打开键盘！");
    }

    @Override
    public void closeDevice() {
        System.out.println("关闭键盘！");
    }

    public void inPut(){
        System.out.println("键盘输入！");
    }
}
